Loose leaf binder



June 1934- J. c. DAWSON 1,964,252

LOOSE LEAF BINDER Filed Dec. 27, 1932 2 Sheets-Shoot. J.

M71107": 2 James G. Dawson June 26, 1934. J. c DAWSON LOOSE LEAF BINDERFiled Dec. 27, 1932 2 Sheets-Sheet 2' Patented June 26, 1934 UNITEDSTATES PATENT OFFICE" Elma N. Dawson, Webster Groves, Mo.

Application December 27, 1932, Serial No. 648,915

4 Claims. (01. 129-23) The invention relates to loose leaf binders inwhich the sheet-carrying prongs are in approximately circular form andare carried by a rotative shaft. The objects of the invention are tosimplify the construction and operation of the binder, and to provide animproved locking device therefor.

A preferred embodimeht of. the invention is hereinafter described, andis illustrated in the accompanying drawings. in which Figs. 1 and 2 aredetail perspective views of the binder when open, the contents andbinding mechanism being differently positioned in the two figures;

Fig. 3 shows in perspective views of the various parts of the bindermechanism detached;

Fig. 4 is a sectional detail on the line 44 of Fig, 5;

Fig. 5 is a detail longitudinal section of the binder in the plane ofone of the sheet-carrying arches;

Fig. 6 is a detail longitudinal section ofthe binder when open, thebinder mechanism being shown in different position from that of Fig. 5.

The binder comprises a cover having the side plates 10, 11, joinedtogether by a back section 12, united'to the side plates by means offlexible hinges 13, 14.

The sheet-carrying prongs .15, 16 are in the general form of open rings.One end 1'1 of the ring is turned in to radial position and is united toa rotatable shaft 18, as by welding, the ring being so positioned thatits radial plane is normal to the axis of the shaft. The .other or outer*end portion 19 of the prong is tangential with reference to itscircumference. v

The shaft 18 is iournaled in a pair of hinge brackets 20, 21, eachhaving a base section '22, apertured to accommodate rivets for attachingit 49 to the inner face of one of the cover plates, as 10, and anupstanding section 23, the upper end of which is rolled over to form thejournal bearing, as indicated at 24, for the shaft. Preferably thesehinge brackets are arranged in line with the sheet-holding prongs, andconsequently are transversely recessed, as shown at 25, for theiraccommodation. The length of the upstanding sections 23 of the hingebrackets is approximately equal to the radius of the sheet-carryingprongs.

50 This type of binder is commonly employed for carrying bank checks andthe like and is usually provided with a cover sheet or plate,approximately the length of the check stubs, and serving to cover themwhen the binder is open.

56 Such a plate is shown at 26, and is carried by a pair of hingebrackets 27, 28, the base sections of which are riveted to the plate,while the hinge leaf of each is rolled over, as indicated at 29, to forman eye, or journal bearing, for the shaft 18. Preferably the hinges ofthe plate 26 are located between the hinge brackets 20, 21. The lengthof the hinge leaves of the brackets 27, 28,

is approximately equal to the radius of the sheetholding prongs, andwhen the binder is open and the plate 26 is thrown backward, it lies incontact with the binder cover plate 11, as shown in Fig. 6. When thebinder is closed, the plate 26 occupies the position indicated in Fig.5.

One end of the shaft 18 is flattened, as indicated at 30, to engagewithin an eye 31 of complementary form in the upstanding arm 32 of anL-shaped locking bracket 33, which is riveted to the back plate 12 ofthe binder. The arm 32 of the locking bracket is elastic and in normalposition is in engagement with the end 30 of the shaft, therebypreventing the rotation of the latter. To release the shaft from thelocking plate the latter is forced backwardly to the dotted linesposition of Fig. 4, whereupon the shaft, together with the sheet-holdingprongs, may be turned be- 30 tween the positions of Figs. 1 and 2.

When in the position of Fig. 2, the sheets34 are threaded upon the nowupstanding end portions 19 of the prongs. The lock being again released,the prongs, together with the sheets carried by them are turned over tothe position of Fig. 1.

Disengagement of the lower sheets when the parts are in the position ofFig. 1, is prevented by making the tangential ends of the prongs ofsufficient length to enter recesses 35 formed in the inner face of thebinder plate 10.

I claim as my invention:

' 1. In a loose leaf binder, in combination, a suitable base, upstandinghinge plates secured to the base, a revolvable rod having anout-of-round end, carried by the hinge plates, a plurality ofapproximately circular sheet-carrying prongs encircling the rod and eachhaving one end inwardly turned and secured to the rod. .the other endthereof being free, and a spring plate upstanding from the base andhaving an out-of-round aperture in line and engageable with the end ofthe rod.

2. In a loose leaf binder, in combination, a suitable base, upstandinghinge plates secured to the K base, a revolvable'rod carried by thehinge plates, a plurality of approximately circular sheet-carry ingprongs encircling the rod and each having sheet having a pair oflaterally protecting hinge plates mounted upon the rod, the outstandinglength of such plates being approximately that of a radius of theprongs.

3. In a loose lea! binder, in combination, a suitable base, upstandinghinge plates secured to the base, a revolvable rod carried by the hingeplates. a plurality of approximately circular sheet-carrying prongsencircling the rod and each having one end inwardly turned and securedto the rod, the other ens! thereof being free, and a cover sheet

